.topBg{background:url(../images/subBg4.png) no-repeat;}

.list1 ul {
    padding: 70px 0;
  }
  .list1 ul li {
    width: 100%;
    background: #fff;
    color: #454545;
    font-family: "SourceHanSansCN-Regular";
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  .list1 ul li img {
    height: 342px;
    margin-right: 70px;
  }
  .list1 ul li > div {
    flex: 1;
    text-align: left;
  }
  .list1 ul li h4 {
    margin-bottom: 15px;
    font-size: 37px;
    font-family: "SourceHanSansCN-Bold";
  }
  .list1 ul li h5 {
    font-size: 21px;
    margin-bottom: 30px;
    color: #454545;
  }
  .list1 ul li p {
    line-height: 32px;
    font-size: 21px;
    color: #656565;
    display: flex;
    align-items: center;
  }
  .list1 ul li p i {
    height: 24px;
    width: 32px;
    margin-right: 5px;
    background: url("../images/ckKuang2.png");
  }
  .list2 {
    background: #eaf3fd;
    padding-top: 70px;
    padding-bottom: 100px;
  }
  .list2 h3 {
    font-size: 38px;
    text-align: center;
    font-family: "SourceHanSansCN-Bold";
    margin-bottom: 45px;
  }
  .list2 ul {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
  }
  .list2 ul li {
    width: 100%;
    margin-bottom: 20px;
    padding: 30px 70px;
    box-sizing: border-box;
    background-image: linear-gradient(#ffffff, #fbfdff, #f8fcff);
    border-radius: 15px;
    font-family: "SourceHanSansCN-Regular";
  }
  .list2 ul li > div {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
  .list2 ul li img {
    height: 230px;
  }
  .list2 ul li > div > div {
    flex: 1;
  }
  .list2 ul li .imgLeft img {
    margin-right: 70px;
  }
  .list2 ul li h4 {
    font-size: 27px;
    font-family: "SourceHanSansCN-Bold";
    margin-top: 30px;
    margin-bottom: 20px;
    color: #484848;
  }
  .list2 ul li p {
    line-height: 32px;
    font-size: 20px;
    color: #656565;
    display: flex;
    align-items: center;
    margin-bottom: 5px;
  }
  .list2 ul li p i {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #90c4ff;
    margin-right: 5px;
    display: block;
  }
  
  .tab {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 2px solid #e0e0e0;
    line-height: 50px;
  }
  .list3 img {
    height: 353px;
    width: 572px;
    margin-right: 45px;
  }
  .tabInfoRight {
    flex: 1;
    text-align: left;
  }
  .tabInfoRight h4 {
    color: #1457b2;
    font-size: 27px;
    font-family: "SourceHanSansCN-Bold";
  }
  .tabInfoRight h5 {
    color: #555555;
    margin-top: 15px;
    margin-bottom: 20px;
    font-size: 21px;
    line-height: 32px;
  }
  .tabInfoRight p {
    font-size: 21px;
    line-height: 30px;
    margin-bottom: 5px;
  }
  .tabInfoRight p i {
    width: 16px;
    height: 16px;
    background: url("../images/ckKuang3.png");
    margin-right: 5px;display: inline-block;
  }
  .tab>li{position: relative;text-align: center;flex:1;cursor: pointer;font-size:21px;color:#1a1a1a;}
  .tab>li>a::after {
      content: '';
      position: absolute;
      left: 50%;
      bottom: 0;
      width: 0%;
      height: 3px;
      background:#3d6fd2;
      transition: all .5s ease;
      transform: translateX(-50%);
  }
  .tab li:hover>a::after,.tab li.active>a::after{
      width: 100%;
  }
  .tab li.active a{color:#3d6fd2;}